Dental bur



FIG. 1 is a side elevation of a dental bur showing my new design;

FIG. 2 is an end elevation thereof;

FIG. 3 is an elevation taken from the opposite end of FIG. 2;

FIG. 4 is a side elevation of a second modified embodiment of the dental bur illustrated in FIG. 1;

FIG. 5 is an end elevation thereof;

FIG. 6 is an elevation taken from the opposite end of FIG. 5;

FIG. 7 is a side elevation of a third modified embodiment of the dental bur illustrated in FIG. 1;

FIG. 8 is an end elevation thereof;

FIG. 9 is an elevation as seen from the opposite end of FIG. 8;

FIG. 10 is a side elevation of a fourth modified embodiment of the dental bur illustrated in FIG. 1;

FIG. 11 is an end elevation thereof;

FIG. 12 is an elevation as seen from the opposite end of FIG. 11;

FIG. 13 is a side elevation of a fifth modified embodiment of the dental bur illustrated in FIG. 1;

FIG. 14 is an end elevation thereof;

FIG. 15 is an elevation as seen from the opposite end of FIG. 14;

FIG. 16 is a side elevation of a sixth modified embodiment of a dental bur illustrated in FIG. 1;

FIG. 17 is an end elevation thereof; and

FIG. 18 is an elevation of the opposite end illustrated in FIG. 17. 

The ornamental design for a dental bur, as shown and described. 